Shell Programming and Scripting

I use NMON (Nigels Monitoring) in AIX. It creates a daily nmon log with the naming conventions of:
hostname_YYMMDD_0000.nmon
or
myserver_080902_0000.nmon

What I am interested in doing is creating a script that is executed on the first of each month to clean up last months *nmon files. . .what I mean by clean up is that it would create a directory in the format of yyyymm and move all of last months files in that newly created directory.

The problem is that each hostname is of different lengths (since I would be using this on different hosts). . .so it's difficult to use the "cut" command because the length of characters will differ from box to box.

I would appreciate any assistance you can lend.

outta.

How about using find?

find dirname -mtime +30 -exec rm -f {} \;

Adjust to suit. This clearly won't delete things from the previous month, but those older than 30 days.

I don't want to delete though. . .just move to the newly created directory. I could use the find though and just move them in. . .good idea.

BTW, you can have cut seperate field based on a particular character, in your case, you could get the date section out by running:

Code:

echo $filename | cut -d '_' -f 2

Give a try on this:

Code:

find dir -name "*$(date +%m%y -d "1 month ago")_0000.nmon" -mtime+1 -exec mv {} new_dir/  \;

And add it in the cron table to run on 1st of everymonth.